AM JUST GONNA LEAVE THIS UP HERE FOR A BIT SEE WHAT SOME FOLKES MAKE OF IT AS REGARDS WHAT
MAY HAS . PUT IT THIS WAY CUBA WONT NEED TO BUY FROM VENEZUELA IN TIME ANYMORE THATS HOW MUCH
MAY HAS . AND BTW THIS TOOK 2 MINS TO FIND!
How oil is extracted in Cuba
Cuba has the second largest proven hydrocarbon reserves in the Caribbean area, surpassed only by those of Trinidad and Tobago. Since 1996, and taking into account that most oil deposits in Cuba are located offshore, CUPET changed its approach to extracting oil by introducing the horizontal perforation method (HPM), which has led to an increase in oil production levels since 2002. This change has had a substantial economic impact on the Cuban oil industry, considering that in most fields where HPM was applied the oil production rate increased markedly.
In the last 14 years, more than 245 million of oil barrels have been extracted from the so-called Heavy Crude North Fringe (HCNF) or Northern Oil Belt (NOB), an oil-rich area between Havana city and Matanzas provinces (see Figure 2). This area accounts for about 97% of Cuban oil production (an oil deposit located in that zone and qualified as ‘productive’ could generate about 2000 b/d), while there are other small production sites located in Ciego de Ávila and Sancti Spiritus provinces, some of them with exploitation periods of more than 
60 years.
The most important oil deposit located in the HCNF, and in Cuba, is that of Varadero, which has 90 fields under exploitation and had produced about 185 million barrels of oil at the end of 2015. It is calculated that only about 6-7% of its potential oil reserves (estimated at 1.3 billion barrels) have been recovered to date because no secondary or enhanced extraction methods have been applied.
At present, annual oil production capacity in Cuba is about 25 million barrels (about 50 000 b/d). This is used entirely for power generation and meets about half of national energy demand, while the rest (about 90 000 b/d) is imported from Venezuela under an exclusive payment agreement. Cuba accounts for only 0.05% of the world’s total production of crude petroleum.
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